Just tried that & they are still there. The closest Apple store is a 56 hour round trip, but the next time I'm in the vicinity, I'll stop in & try the genius bar. Thanks
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Randy PhillipsJan 14 '13 at 14:16

When you open the Reminders app, make sure there isn't anything set in both RemindersandTasks.

You may have created a Task using Siri, or another app by accident. And as a result of the way the app is setup on the iPhone, it doesn't default to showing you both Reminders and Tasks at the same time.

On the iPhone try the following:

Open up the Reminders app

Tap near the bottom of the screen (you should see other white tabs)

Tap on whichever tab is not active (most likely Tasks)

If there are any items listed there, check them off by tapping the circles next to the name

On the Mac try the following:

Open up the Reminders app

Ensure sidebar is visible by going to View > Show Sidebar in the top Menu Bar

Click on all of the different options in the sidebar (Today, Reminders, Tasks, etc)

If there are any items listed there, check them off by clicking the circles next to the name